What type of taxes must be paid to the federal government by April 15th?

By April 15th, individuals must pay federal income taxes, which are based on their earnings and taxable income for the previous year. Additionally, self-employed individuals are required to pay self-employment taxes, which cover Social Security and Medicare contributions. Other potential federal taxes include alternative minimum tax and additional taxes on specific types of income, such as capital gains. It's essential for taxpayers to file their returns and pay any owed taxes by this deadline to avoid penalties.